Abstract
We demonstrate large (>100%) time-dependent magnetoresistance in nickel-silicide nanowires and develop a thermodynamic model for this behavior. The model describes nonequilibrium heating of localized spins in an increasing magnetic field. We find a strong interaction between spins but no long-range magnetic order. The spins likely come from unpaired dangling bonds in the interfacial layers of the nanowires. The model indicates that although these bonds couple weakly to a thermal bath, they dominate the nanowire resistance.
| Original language | English |
|---|---|
| Pages (from-to) | 1106-1110 |
| Number of pages | 5 |
| Journal | Nano Letters |
| Volume | 13 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 13 2013 |
Keywords
- heat transfer in nanostructures
- interfacial spins
- magnetoresistance
- nanomagnetism
- nanostructured silicides
- Self-assembled nanowires
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